Assembling a .hex file for EEPROM using ASM68K.exe

Question

I know this is a long shot but my college is closed at the moment so i’ll ask here for now.

For my senior lab we are asked to program a 28C16A EEPROM. What is expected to go on this EEPROM is incredibly simple. It’s just a truth table with 10 or so lines. Inputs and outputs. Nothing special.

Now what’s very odd is they ask us to create the .hex file for the EEPROM using ASM68K.EXE, but I have not been able to find much info on this assembler. Seems like people use it for retro sonic games. I could just make the .hex file from a text file right? But they specifically ask to use this assembler. How would you even begin to do this? Python? C? The lab doesn’t give much more info

From the public lab manual:

Answer 1

I don't know the answer for the ASM68K.exe, but I can give you the answer for any assembler, which you'll have to complete with some digging.

And, on second reading of your given code snippit, I think they've handed the answer to you.

Typically, assemblers let you define constants to be placed in memory. The syntax is different from assembler to assembler, but they all let you do this.

• Define a starting address (this is the ORG statement in your code snippet)
• Define numeric data --or--
• Define string data (i.e. "hello world")

I'm pretty sure that the code snippet they gave you generates exactly the sort of table you want. The DC.B directives are followed by numbers that are prefaced by dollar signs -- IIRC, Motorola assembler used $ to mean "hex constant to follow", and the following numbers are certainly one-byte hex numbers. And DC.B sounds like assembler-ese for "Data, constant, byte".

So -- assemble that code, see what the hex file looks like, and report back.